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16  Using Arduino / Project Guidance / Re: Arduino Leonardo / YUN as HID keyboard for PC on: September 16, 2014, 02:24:11 am
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Firstly I am familiar with Atmega and various embedded processors. But I don't  know everything.  smiley-confuse

sadly I am new to aurdino itself.

I think it's generally the other way out, generally people know Arduino and then from Arduino they come to know such a thing like an ATmega exists  smiley-wink

Nevermind.

you need a USB micro with HID stack supported on it which in Arduino realm is the Leo.
17  Using Arduino / Project Guidance / Re: beginner need some advice on: September 16, 2014, 02:21:29 am
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hey guys, i want to make a smoke detector using mq2 and dht11 and send the alarm by sms. the condition is when a temperature reach 40C and there's a smoke detected then the arduino will sends a message. is it possible to make that project?
and do u guys have a references that i can use? thank you

Arduino is not going to send message by itself you will need to first of all get the MQ2 sensor prepared which requires various steps such as pre-heating etc and then you will have to test it to code what Analog values are putup.

To send messages from arduino you will need a grps or 3G module like the SMB5100 or SIM900 or SIM300 or ETC.
18  Community / Exhibition / Gallery / ATTINY84 USI i2c comm. on: September 08, 2014, 03:07:34 pm
http://youtu.be/KfkMPn7SgDg
19  Using Arduino / Installation & Troubleshooting / Re: Standalone atmega8 burning bootloader problem on: August 03, 2014, 02:09:11 pm
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the atmega8 board does show up, but got this error:
Code:
avrdude: can't open input file D:\My Apps\arduino-1.0.5\hardware\arduino\bootloaders\atmega8\atmega8_8.hex: No such file or directory
avrdude: read from file 'D:\My Apps\arduino-1.0.5\hardware\arduino\bootloaders\atmega8\atmega8_8.hex' failed

and you simply do not have any bootloader file named atmega8_8.hex in your Arduino IDE distribution use a bootloader filename  that you actually have in the bootloaders folder.
20  Using Arduino / Installation & Troubleshooting / Re: Standalone atmega8 burning bootloader problem on: August 03, 2014, 02:04:50 pm
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trying to burn it anyway gave me this error message:
Code:
avrdude: Expected signature for ATMEGA328P is 1E 95 0F
         Double check chip, or use -F to override this check.

my question: how to burn a bootloader to an atmega8 using uno with IDE 1.0.5 ?

Hmm.. that's because the avrdude's reading fuses of a Atmega8 while expecting ATmega328p, maybe you should change the chip thats selected in the IDE, I personally use the STK500 programmer along with winavr or programmers pad to load the hex's.
21  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 03, 2014, 01:50:35 pm
Im back after sunday night(although its still sunday night but done with the Purge 2 so..)
It's good that you got it but... I did say that Actually first of get a good serious Accelerometer and then pour your inputs into it, I did a lot of studying before I chose the accelerometer I have to work with, the one you have I had that on list but this one's takes a lot of power + is analog,  I would suggest an Accelerometer such as a MMA 8451/52.
ONe of the many positives in these i2c or serial based Accels are that there is one comm line for communication get all the axis data is respectvie registers and take what you want! plus portrait landscape and freefall register get fucntionality going fast.
22  Using Arduino / Project Guidance / Re: i am new to ARDUINO, guys please help on: August 03, 2014, 01:36:58 am
I think this guy isn't sure what he actually wants.
Also asking a question is also an art ,you have to put it the right way.
23  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 02, 2014, 11:03:52 am
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i suppose the √óbest way is to record data from the three axis whilst waving the wand around and look at the data and see if it makes sense.

We do not need to load the MCU with extra axis data and commence on some conditions the reason is that the only time other axis would be useful is when you want to note that whether the waving hand or wand is tilted backwards or forwards which I think isn't needed by you.

The easiest and fastest but somewhat inaccurate way to implement what you are talking about is to use the Portrait and Landscape register data which is available in most of the accelerometers out there, so if its like potrait and goes to landscape right then it means 50% of the wave thats one way is completed ,so something like that added with some additional tricky coding may help recognizing the wave in the correct direction the easy and fast way.
24  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 02, 2014, 10:47:18 am
Off course yeah, The tilt on a single axis can work forya, I think when you'll wave the wand or hand I mean make waving movements on one side, the accelerometer is going to repeat the movement on that side more than one time and as such I think you can code to recognize such multiple travelling movements to a single side.
25  Using Arduino / Project Guidance / Re: using an acceleromter to detect wand movement is my theory correct? on: August 02, 2014, 10:13:10 am
I think you need an mpu, to precisely detec motion movements and map them to your animation on the POV.
26  Using Arduino / Project Guidance / Re: i am new to ARDUINO, guys please help on: August 02, 2014, 10:07:51 am
Arduino is C/C++ wrapped up with wiring libraries just workout your code in IF or Switch conditions as you would do with any C/C++ software programme and then use wiring methods of pinMode() to set the pin mode to output or input and use digitalWrite to control the outputs!

Read the reference section on how to use, try to write the code and test it and if its doesn't work post here, people will workout the problem.
27  Community / Gigs and Collaborations / Re: Arduino ethernet + sdcard+web interface on: July 31, 2014, 10:56:09 am
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Wow, I'm amazed, I didn't realise my programming skills were in such demand.

Every now and then you'll get such folks, just be a frequent at the forum!
28  Community / Exhibition / Gallery / UVsensor Android App! (Sensor code available and App. free!) on: July 31, 2014, 10:52:31 am

See following for details:

https://play.google.com/store/apps/details?id=com.winacro.UVsense
29  Using Arduino / Motors, Mechanics, and Power / Re: Nerf Rapidstrike: MOSFET + PWM + Motor braking on: July 31, 2014, 02:52:13 am
Well okay it's kind of a beefy one and I don't know your motors depends on the stall current of the motor but if you're that lazy then maybr just go with this.
30  Using Arduino / Motors, Mechanics, and Power / Re: Nerf Rapidstrike: MOSFET + PWM + Motor braking on: July 30, 2014, 11:18:24 pm
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This is what I am after; but is there a way to do this but with just N channel MOSFETs?

Well you need to workout the circuit reverse so P's are needed and also you can use an H-Bridge.
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